Is this range right?

Author
Discussion

fly

Original Poster:

72 posts

91 months

Sunday 5th March 2023
quotequote all
Never had an EV before, but thinking about it...

I tried out an EQC and with a variety of driving it averaged 2.0 miles per kwh.
With 80kwh usable and day-to-day only working within the 10% - 80% range, that only gives 56kwh. So 112 miles range day-to-day. I often drive 120-150 miles in a day and don't have time to stop in the middle.

My C63 only averages 14mpg and I can still get 200 miles on a tank.

Am I missing something or am I right to feel very disappointed?

dmsims

7,180 posts

281 months

Monday 6th March 2023
quotequote all
Massive brick = very bad aero

You must have been absolutely caning it

Bjorn results were:


Temp Speed km/h Range miles
Mercedes EQC Wet 11 Nokian R3 Winter 235/50-20 255/45-20 90 242
Mercedes EQC Wet 11 Nokian R3 Winter 235/50-20 255/45-20 120 176


Edited by dmsims on Monday 6th March 00:13

raspy

1,992 posts

108 months

Monday 6th March 2023
quotequote all
Try a half decent EV from MB like an EQE or EQS, you won't be disappointed

Phunk

2,047 posts

185 months

Monday 6th March 2023
quotequote all
Why are you only working within the 10-80% range?

Is the range in your C63 only using 70% of its tank?

SWoll

20,440 posts

272 months

Monday 6th March 2023
quotequote all
dmsims said:
You must have been absolutely caning it
yes

fly said:
My C63 only averages 14mpg

fly

Original Poster:

72 posts

91 months

Monday 6th March 2023
quotequote all
SWoll said:
dmsims said:
You must have been absolutely caning it
yes

fly said:
My C63 only averages 14mpg
To be fair, it's the original 6.2 rather than the soft eco-friendly 4.0 smile. And I can get a staggering 20mpg on a long run.

MrOrange

2,037 posts

267 months

Monday 6th March 2023
quotequote all
fly said:
Never had an EV before, but thinking about it...

I tried out an EQC and with a variety of driving it averaged 2.0 miles per kwh.
With 80kwh usable and day-to-day only working within the 10% - 80% range, that only gives 56kwh. So 112 miles range day-to-day. I often drive 120-150 miles in a day and don't have time to stop in the middle.

My C63 only averages 14mpg and I can still get 200 miles on a tank.

Am I missing something or am I right to feel very disappointed?
Aside from the brick aero comments, I find that my EV (Solterra, 64kWh) does quite poor consumption for the first few miles on colder mornings if it's not been conditioned with a preset leave time. As a result I was getting similar range numbers (125 miles) to you when I was doing 3 mile journeys then stopping for an hour and then another short journey. Made even worse by using full cabin hetaing.

When the journeys were a touch longer - say 30 miles, the usable range almost doubled.

TL;DR: If you want to do distance leave your car on charge the night before and condition/pre-heat it using your house electric or accept that the initial range/usage will take a hammering until the battery and cabin is up to operating temp.

My 2p

Otispunkmeyer

13,343 posts

169 months

Monday 6th March 2023
quotequote all
Phunk said:
Why are you only working within the 10-80% range?

Is the range in your C63 only using 70% of its tank?
Yes this isn't really needed as I am sure most EVs now already operate like this and its presented to the driver as 0-100% already.

for reference EQC has an 85 kWh nominal battery pack size with 80 kWh being usable so base your calculation on the usable pack size of 80.


PetrolHeadInRecovery

266 posts

29 months

Monday 6th March 2023
quotequote all
fly said:
I often drive 120-150 miles in a day and don't have time to stop in the middle.
I'm wondering how absolute the "no time to stop in the middle" is?

If a 20-minute coffee/comfort stop is possible, you might get (in the real world) between 20 and 50 kWh with a suitable fast charger/car combination. 40 miles more range, even in the worst-case scenario.

Requires a different car model, though. EQS?



Bannock

7,681 posts

44 months

Monday 6th March 2023
quotequote all
2 miles per kwh is staggeringly low for an EV. I've no idea if it's normal for that particular model, by my 2017 Nisan Leaf does 4.2 according to its average readout at the moment, and that's including the last winter's use. Seems like big SUVs make poor EVs. I'd suggest getting a car shaped car if you want an EV with the range you require.

Otispunkmeyer

13,343 posts

169 months

Monday 6th March 2023
quotequote all
Bannock said:
2 miles per kwh is staggeringly low for an EV. I've no idea if it's normal for that particular model, by my 2017 Nisan Leaf does 4.2 according to its average readout at the moment, and that's including the last winter's use. Seems like big SUVs make poor EVs. I'd suggest getting a car shaped car if you want an EV with the range you require.
Don't think it is far wrong...spritmonitor.de has data for the EQC and the average is 30.2 kWh/100km or 482 Wh/mi. So just over 2 miles for the kWh.

That is the average as well. The max value goes well in to the 1.x miles per kWh.

It's just a juicy EV.

barryrs

4,793 posts

237 months

Monday 6th March 2023
quotequote all
I’m picking up an EQC in the next week or so as the £9k Mercedes contribution & £500 towards a charger made it an attractive proposition.

My daily commute is a 50 mile cross country round trip and I will be plugging in at home via a 7kw charger so hopefully will suit my needs.

I was hoping for something around 2.4 miles per kw.


SWoll

20,440 posts

272 months

Monday 6th March 2023
quotequote all
Otispunkmeyer said:
Don't think it is far wrong...spritmonitor.de has data for the EQC and the average is 30.2 kWh/100km or 482 Wh/mi. So just over 2 miles for the kWh.

That is the average as well. The max value goes well in to the 1.x miles per kWh.

It's just a juicy EV.
That's piss poor. Our etron 55, with more weight and similar performance, has average 2.5 miles/kwh over the past 18 months and 2 winters we've had it. Did a 20 mile trip today of mixed driving and it returned 2.7 miles/kWh without pre-conditioning and at 8 degrees.


raspy

1,992 posts

108 months

Tuesday 7th March 2023
quotequote all
Bannock said:
2 miles per kwh is staggeringly low for an EV. I've no idea if it's normal for that particular model, by my 2017 Nisan Leaf does 4.2 according to its average readout at the moment, and that's including the last winter's use. Seems like big SUVs make poor EVs. I'd suggest getting a car shaped car if you want an EV with the range you require.
Why is it shocking that an SUV (regardless of fuel type) is less efficient on fuel than a small car?

Bannock

7,681 posts

44 months

Tuesday 7th March 2023
quotequote all
raspy said:
Bannock said:
2 miles per kwh is staggeringly low for an EV. I've no idea if it's normal for that particular model, by my 2017 Nisan Leaf does 4.2 according to its average readout at the moment, and that's including the last winter's use. Seems like big SUVs make poor EVs. I'd suggest getting a car shaped car if you want an EV with the range you require.
Why is it shocking that an SUV (regardless of fuel type) is less efficient on fuel than a small car?
It's shocking because one of the major points about the move to EV is supposed to be efficiency, and yet here we are producing laughably inefficient cars. I'm not shocked that an SUV is inefficient, I'm shocked that we're producing SUV EVs at all. We should be taking the opportunity to divest ourselves of these unnecessarily inefficient vehicles from our roads as far as possible. But yeah, I know, Tanya wants one to drive the dustbin lids to school in and look down on lesser mummies, so here we are.

barryrs

4,793 posts

237 months

Tuesday 7th March 2023
quotequote all
laugh

Bit of a sweeping statement there!

Personally my commute is along very rural roads and I’m tired of smashing over potholes in my coupe.

Bannock

7,681 posts

44 months

Tuesday 7th March 2023
quotequote all
barryrs said:
laugh

Bit of a sweeping statement there!

Personally my commute is along very rural roads and I’m tired of smashing over potholes in my coupe.
Yeah all right, people who live up mountains or in swamps get a pass. Tanya in Lower Earley however does not.

wink

raspy

1,992 posts

108 months

Tuesday 7th March 2023
quotequote all
Bannock said:
It's shocking because one of the major points about the move to EV is supposed to be efficiency, and yet here we are producing laughably inefficient cars. I'm not shocked that an SUV is inefficient, I'm shocked that we're producing SUV EVs at all. We should be taking the opportunity to divest ourselves of these unnecessarily inefficient vehicles from our roads as far as possible. But yeah, I know, Tanya wants one to drive the dustbin lids to school in and look down on lesser mummies, so here we are.
It's called consumer choice. Life would be really boring if we were all assigned a Nissan Leaf as the only choice of vehicle. Thank God we aren't living in a dictatorship.

essayer

10,162 posts

208 months

Tuesday 7th March 2023
quotequote all
the Leaf is pretty inefficient too, to be honest


rewild

3,089 posts

153 months

Tuesday 7th March 2023
quotequote all
I don't think your sums are too far wrong. Some EVs are more equal than others.
While the Merc (and eTron and Taycan and many others) are getting 2.0-2.5 miles/kWh, the Tesla, EV6, ioniq 5 etc could be seeing 4+ in the same conditions.
Definitely try some other models and see if the sums look better for your needs.